I have tested it on VM a windows based workstation with 10g
and recieved same message as executing this command.
omctl start oms
That is "Environment variable ORACLE_SID not defined. Please define it."
I have then set Environment variable ORACLE_SID with following command.
set ORACLE_SID=dbname
and issued same command again
omctl start oms
Oracle Enterprise Manager 10g Database Control Release 10.2.0.1.0
Copyright (c) 1996, 2005 Oracle Corporation. All rights reserved.
Oracle Enterprise Manager 10g Grid Control not installed. Request Ignored.
---- So i think i have resolved it and only i need to install Grid Control.
By: Muhammad Anil Babur from Islamabad, Pakistan.